A 27-year-old man wearing body armor and carrying a high-powered M4 rifle shot and killed four people, including an off-duty police officer working security in a Midtown Manhattan office building, officials said during a press conference Monday evening.
A fifth victim was left critically injured in the shooting, officials said.
The incident occurred just before 6:30 p.m. in a building located at 345 Park Ave. and 52nd Street, which contains the headquarters for the investment company Blackstone and the National Football League, sources told ABC News…